Summary Fermat’s Last Theorem says that for integers n ≥ 2, there are no solutions to xn + yn = zn among positive integers. What about rational exponents n? Irrational n? Negative n? See what an ...

The value of the exponents in these fractional (fSIR) models depends on factors such as the nature and extent of contact between infected and healthy sub-populations.

Building on two centuries' experience, Taylor & Francis has grown rapidly over the last two decades to become a leading international academic publisher. The Group publishes over 800 journals and over ...

Learn about letters or numbers to the power of zero, negative indices. Also revise fractional indices for Higher only in this GCSE maths guide.

Researchers demonstrate that they can make more accurate predictions about the spread of infectious diseases by using fractional exponents for infected sub-groups, particularly in the early stages ...